Hi Josh,
where you live may have some bearing on where or how you grow them. Also since you live in the USA there are restrictions on receiving live material from overseas.
Do you belong to the North American Rock Garden Society? Their seed list often contains a good variety of amaryllids and if there is a chapter near you there is a chance that they hold a plant swap/sale which will enable you to build up a collection of what is available locally.
I'll PM you about some seed.
cheers
fermi